The answer is to set a CloudWatch Logs retention policy to expire logs after 7 years, as this is the most cost-effective way to meet compliance requirements. CloudWatch Logs allows you to define a retention period per log group, automatically deleting logs older than the specified duration, which directly reduces storage costs by preventing indefinite data accumulation. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of native CloudWatch Logs cost optimization features versus more complex export workflows; a common trap is overcomplicating the solution by immediately thinking of S3 Lifecycle policies or Glacier, when a simple retention policy is both compliant and cheaper for rarely-accessed logs. Remember, for long-term retention where logs are seldom queried, the simplest native setting is often the most cost-effective. Memory tip: “Retain and drain” — set the retention, let CloudWatch drain old logs automatically.
SOA-C02 Cost and Performance Optimization Practice Question
This SOA-C02 practice question tests your understanding of cost and performance optimization. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses Amazon CloudWatch Logs to store application logs. The logs are retained indefinitely. The compliance team requires logs to be retained for 7 years. What is the MOST cost-effective way to meet this requirement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set a log retention policy in CloudWatch Logs to expire logs after 7 years.
Option A is correct because CloudWatch Logs supports log retention policies that automatically expire logs after a specified period, reducing storage costs. Option B is wrong because exporting to S3 and then using S3 Lifecycle is more complex and may incur additional costs. Option C is wrong because exporting to S3 Glacier is an option but not the most cost-effective for 7-year retention if logs are accessed rarely; however, retention policy is simpler. Option D is wrong because disabling logging is not compliant.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Export logs to Amazon S3 and immediately transition to S3 Glacier Deep Archive.
Why it's wrong here
Immediate transition to Glacier may be cheaper for long-term retention but adds export costs.
✗
Export logs to Amazon S3 and create an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 7 years.
Why it's wrong here
Exporting and using Glacier adds complexity and cost; retention policy is simpler.
✗
Disable logging after 7 years to stop incurring costs.
Why it's wrong here
Disabling logging does not meet compliance requirements.
✓
Set a log retention policy in CloudWatch Logs to expire logs after 7 years.
Why this is correct
Retention policies automatically delete logs after the specified period, saving costs.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Cost and Performance Optimization — This question tests Cost and Performance Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set a log retention policy in CloudWatch Logs to expire logs after 7 years. — Option A is correct because CloudWatch Logs supports log retention policies that automatically expire logs after a specified period, reducing storage costs. Option B is wrong because exporting to S3 and then using S3 Lifecycle is more complex and may incur additional costs. Option C is wrong because exporting to S3 Glacier is an option but not the most cost-effective for 7-year retention if logs are accessed rarely; however, retention policy is simpler. Option D is wrong because disabling logging is not compliant.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This SOA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SOA-C02 exam.
Question Discussion
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